Force change the repository to a current one

[ktaletsk]

Fixes #876.

[github-actions]

👈 Launch a binder notebook on branch ktaletsk/jupyterlab-git/sidebar-bug

[fcollonval]

Thanks @ktaletsk

When testing the PR I realized that the current branch and the branch list are also affected. From the state:

      branches: [], // Affected
      currentBranch: '', // Affected
      files: [], // Not affected
      nCommitsAhead: 0,  // TBC not affected
      nCommitsBehind: 0, // TBC not affected
      pastCommits: [], // Not affected
      repository: null, // Affected
      tab: 0 // Not affected

In light of that, would it work to initialize the state in the constructor with the model values?

[ktaletsk]

Hi @fcollonval, that seems to work just fine and fixes the bug. I moved repository assignment from componentDidMount to constructor and initialized current branch and the branch list from model there as well.

[fcollonval]

Awesome thanks a lot @ktaletsk for the quick fix

[fcollonval]

@meeseeksdev backport to jlab-2